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A064198 a(n) = 3*(n-2)*(n-3)*(3*n^2-3*n-8)/2. 1
0, 0, 84, 468, 1476, 3540, 7200, 13104, 22008, 34776, 52380, 75900, 106524, 145548, 194376, 254520, 327600, 415344, 519588, 642276, 785460, 951300, 1142064, 1360128, 1607976, 1888200, 2203500, 2556684, 2950668, 3388476 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,3

REFERENCES

L. Berzolari, Allgemeine Theorie der Höheren Ebenen Algebraischen Kurven, Encyclopädie der Mathematischen Wissenschaften mit Einschluss ihrer Anwendungen. Band III_2. Heft 3, Leipzig: B. G. Teubner, 1906. p. 341.

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 2..1000

FORMULA

G.f.: 12*x^4*(7+4*x-2*x^2)/(1-x)^5. - Colin Barker, Feb 28 2012

MATHEMATICA

Table[3*(n-2)*(n-3)*(3*n^2-3*n-8)/2, {n, 2, 40}] (* Vincenzo Librandi, Feb 29 2012 *)

PROG

(MAGMA) [3*(n-2)*(n-3)*(3*n^2-3*n-8)/2: n in [2..30]]; // Vincenzo Librandi, Feb 29 2012

CROSSREFS

Sequence in context: A251293 A251254 A349682 * A329935 A233055 A233056

Adjacent sequences:  A064195 A064196 A064197 * A064199 A064200 A064201

KEYWORD

nonn,easy

AUTHOR

Antreas P. Hatzipolakis (xpolakis(AT)otenet.gr), Sep 22 2001

STATUS

approved

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Last modified August 15 11:04 EDT 2022. Contains 356145 sequences. (Running on oeis4.)